Get public pgp key

[henry atting]

Hi,

once when a mail with an unknown public key arrived a xterm open up and
I was asked if the key should be fetched.
Unfortunately this works no longer.
The according settings in .gnus.el are:

,----
| (require 'pgg)
| (setq pgg-scheme 'epg)
| 
| (require 'epa-setup)
| (setq mml2015-use 'epg)
| 
| 
| ;; verify GnuPG signature on incoming mail
| (setq mm-verify-option 'always)
| 
| (setq pgg-cache-passphrase t
|       pgg-passphrase-cache-expiry 1800
|       pgg-query-keyserver t
|       pgg-default-keyserver-address "subkeys.pgp.net") 
`----


Cheers,
henry